1 /****************************************************************************
2 **
3 * Draw circle by foci and a point on circle
4
5 Copyright (C) 2012 Dongxu Li (dongxuli2011@gmail.com)
6 Copyright (C) 2011 R. van Twisk (librecad@rvt.dds.nl)
7
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 **********************************************************************/
22 #include<vector>
23 #include <QAction>
24 #include <QMouseEvent>
25 #include "rs_actiondrawcircletan2_1p.h"
26
27 #include "rs_dialogfactory.h"
28 #include "rs_graphicview.h"
29 #include "rs_commandevent.h"
30 #include "rs_arc.h"
31 #include "rs_circle.h"
32 #include "lc_quadratic.h"
33 #include "rs_coordinateevent.h"
34 #include "rs_point.h"
35 #include "rs_preview.h"
36 #include "rs_debug.h"
37
38 struct RS_ActionDrawCircleTan2_1P::Points {
39 RS_Vector point;
40 RS_CircleData cData;
41 RS_Vector coord;
42 double radius = 0.;
43 bool valid = false;
44 //keep a list of centers found
45 RS_VectorSolutions centers;
46 std::vector<RS_AtomicEntity*> circles;
47 };
48
49 /**
50 * Constructor.
51 *
52 */
RS_ActionDrawCircleTan2_1P(RS_EntityContainer & container,RS_GraphicView & graphicView)53 RS_ActionDrawCircleTan2_1P::RS_ActionDrawCircleTan2_1P(
54 RS_EntityContainer& container,
55 RS_GraphicView& graphicView)
56 :RS_PreviewActionInterface("Draw tangent circle 2P",
57 container, graphicView)
58 , pPoints(new Points{})
59 {
60 actionType=RS2::ActionDrawCircleTan2_1P;
61 }
62
63 RS_ActionDrawCircleTan2_1P::~RS_ActionDrawCircleTan2_1P() = default;
64
init(int status)65 void RS_ActionDrawCircleTan2_1P::init(int status) {
66 if(status>=0) {
67 RS_Snapper::suspend();
68 }
69 if(status>(int) pPoints->circles.size()) status=(int) pPoints->circles.size();
70 RS_PreviewActionInterface::init(status);
71 for(int i=0; i<status; ++i){
72 if(!pPoints->circles[i]) {
73 status=i;
74 break;
75 }
76 }
77 bool updateNeeded(false);
78 for(size_t i=status>=0?status:0; i<pPoints->circles.size(); ++i){
79 if(pPoints->circles[i])
80 if(pPoints->circles[i]->isHighlighted()){
81 pPoints->circles[i]->setHighlighted(false);
82 updateNeeded=true;
83 }
84 }
85 if(updateNeeded) graphicView->redraw(RS2::RedrawDrawing);
86 pPoints->circles.resize(status>=0?status:0);
87 }
88
89
finish(bool updateTB)90 void RS_ActionDrawCircleTan2_1P::finish(bool updateTB){
91 if( pPoints->circles.size() >0) {
92 for(RS_AtomicEntity*const circle: pPoints->circles)
93 circle->setHighlighted(false);
94 graphicView->redraw(RS2::RedrawDrawing);
95 }
96 RS_PreviewActionInterface::finish(updateTB);
97 }
98
trigger()99 void RS_ActionDrawCircleTan2_1P::trigger() {
100 RS_PreviewActionInterface::trigger();
101 RS_Circle* c=new RS_Circle(container, pPoints->cData);
102
103 container->addEntity(c);
104
105 // upd. undo list:
106 if (document) {
107 document->startUndoCycle();
108 document->addUndoable(c);
109 document->endUndoCycle();
110 }
111
112
113 for(RS_AtomicEntity*const circle: pPoints->circles)
114 circle->setHighlighted(false);
115 graphicView->redraw(RS2::RedrawDrawing);
116 pPoints->circles.clear();
117
118
119 RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::trigger():"
120 " entity added: %d", c->getId());
121 init(SetCircle1);
122 }
123
124
getCenters()125 bool RS_ActionDrawCircleTan2_1P::getCenters()
126 {
127 if(pPoints->circles.size()<2) return false;
128 LC_Quadratic lc0(pPoints->circles[0], pPoints->point);
129 LC_Quadratic lc1(pPoints->circles[1], pPoints->point);
130
131 auto const& list=LC_Quadratic::getIntersection(lc0,lc1);
132 pPoints->centers.clear();
133 for(const RS_Vector& vp: list){
134 auto ds=vp.distanceTo(pPoints->point)-RS_TOLERANCE;
135 bool validBranch(true);
136 for(int j=0;j<2;j++){
137 if(pPoints->circles[j]->rtti()==RS2::EntityCircle||pPoints->circles[j]->rtti()==RS2::EntityArc){
138 if( vp.distanceTo(pPoints->circles[j]->getCenter()) <= ds) {
139 validBranch=false;
140 break;
141 }
142 }
143 }
144 if(validBranch) pPoints->centers.push_back(vp);
145 }
146 return pPoints->centers.size()>0;
147 }
148
mouseMoveEvent(QMouseEvent * e)149 void RS_ActionDrawCircleTan2_1P::mouseMoveEvent(QMouseEvent* e) {
150 RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::mouseMoveEvent begin");
151
152 switch( getStatus()){
153 case SetPoint:
154 pPoints->coord=snapPoint(e);
155 pPoints->point=pPoints->coord;
156 break;
157 case SetCenter:
158 pPoints->coord=graphicView->toGraph(e->x(),e->y());
159 break;
160 default:
161 return;
162 }
163 deletePreview();
164 if(preparePreview()){
165 RS_Circle* e=new RS_Circle(preview.get(), pPoints->cData);
166 for (auto const& vp: pPoints->centers)
167 preview->addEntity(new RS_Point(preview.get(), vp));
168 preview->addEntity(e);
169 drawPreview();
170 }
171 RS_DEBUG->print("RS_ActionDrawCircleTan2_1P::mouseMoveEvent end");
172 }
173
preparePreview()174 bool RS_ActionDrawCircleTan2_1P::preparePreview(){
175 if (!getCenters()) return false;
176 pPoints->cData.center=pPoints->centers.getClosest(pPoints->coord);
177 pPoints->cData.radius=pPoints->point.distanceTo(pPoints->cData.center);
178 return true;
179 }
180
catchCircle(QMouseEvent * e)181 RS_Entity* RS_ActionDrawCircleTan2_1P::catchCircle(QMouseEvent* e) {
182 RS_Entity* ret=nullptr;
183 RS_Entity* en = catchEntity(e,enTypeList, RS2::ResolveAll);
184 if (!en) return ret;
185 if (!en->isVisible()) return ret;
186 for(auto p: pPoints->circles){
187 if(p && en->getId() == p->getId()) return ret; //do not pull in the same line again
188 }
189 if(en->getParent() && en->getParent()->ignoredOnModification()){
190 return nullptr;
191 }
192 return en;
193 }
194
mouseReleaseEvent(QMouseEvent * e)195 void RS_ActionDrawCircleTan2_1P::mouseReleaseEvent(QMouseEvent* e) {
196 // Proceed to next status
197 if (e->button()==Qt::LeftButton) {
198
199 switch (getStatus()) {
200 case SetCircle1:
201 case SetCircle2:
202 {
203 pPoints->circles.resize(getStatus());
204 RS_AtomicEntity* en = static_cast<RS_AtomicEntity*>(catchCircle(e));
205 if (!en) return;
206 // circle = static_cast<RS_AtomicEntity*>(en);
207 en->setHighlighted(true);
208 pPoints->circles.push_back(en);
209 graphicView->redraw(RS2::RedrawDrawing);
210 setStatus(getStatus()+1);
211 }
212 break;
213 case SetPoint:
214 {
215 RS_Vector snapped = snapPoint(e);
216 RS_CoordinateEvent ce(snapped);
217 coordinateEvent(&ce);
218 }
219 break;
220 case SetCenter:
221 pPoints->coord=graphicView->toGraph(e->x(),e->y());
222 if(preparePreview()) trigger();
223 break;
224
225 default:
226 break;
227 }
228 } else if (e->button()==Qt::RightButton) {
229 // Return to last status:
230 if(getStatus()>0){
231 deletePreview();
232 }
233 init(getStatus()-1);
234 }
235 }
236
237
coordinateEvent(RS_CoordinateEvent * e)238 void RS_ActionDrawCircleTan2_1P::coordinateEvent(RS_CoordinateEvent* e) {
239
240 RS_Vector mouse = e->getCoordinate();
241 switch(getStatus()){
242
243 case SetPoint:
244 pPoints->point=mouse;
245 pPoints->coord=mouse;
246 if(getCenters()) {
247 if(pPoints->centers.size()==1) trigger();
248 else setStatus(getStatus()+1);
249 }
250 break;
251 default:
252 break;
253 // case SetCenter:
254 // coord=mouse;
255 // trigger();
256 }
257
258 }
259
260 //fixme, support command line
261
262 /*
263 void RS_ActionDrawCircleTan2_1P::commandEvent(RS_CommandEvent* e) {
264 QString c = e->getCommand().toLower();
265
266 if (checkCommand("help", c)) {
267 RS_DIALOGFACTORY->commandMessage(msgAvailableCommands()
268 + getAvailableCommands().join(", "));
269 return;
270 }
271
272 switch (getStatus()) {
273 case SetFocus1: {
274 bool ok;
275 double m = RS_Math::eval(c, &ok);
276 if (ok) {
277 ratio = m / major.magnitude();
278 if (!isArc) {
279 trigger();
280 } else {
281 setStatus(SetAngle1);
282 }
283 } else
284 RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
285 }
286 break;
287
288 case SetAngle1: {
289 bool ok;
290 double a = RS_Math::eval(c, &ok);
291 if (ok) {
292 angle1 = RS_Math::deg2rad(a);
293 setStatus(SetAngle2);
294 } else
295 RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
296 }
297 break;
298
299 case SetAngle2: {
300 bool ok;
301 double a = RS_Math::eval(c, &ok);
302 if (ok) {
303 angle2 = RS_Math::deg2rad(a);
304 trigger();
305 } else
306 RS_DIALOGFACTORY->commandMessage(tr("Not a valid expression"));
307 }
308 break;
309
310 default:
311 break;
312 }
313 }
314 */
315
getAvailableCommands()316 QStringList RS_ActionDrawCircleTan2_1P::getAvailableCommands() {
317 return {};
318 }
319
updateMouseButtonHints()320 void RS_ActionDrawCircleTan2_1P::updateMouseButtonHints() {
321 switch (getStatus()) {
322 case SetCircle1:
323 RS_DIALOGFACTORY->updateMouseWidget(tr("Specify a line/arc/circle"),
324 tr("Cancel"));
325 break;
326
327 case SetCircle2:
328 RS_DIALOGFACTORY->updateMouseWidget(tr("Specify the another arc/circle"),
329 tr("Back"));
330 break;
331
332 case SetPoint:
333 RS_DIALOGFACTORY->updateMouseWidget(tr("Specify a point on the tangent circle"),
334 tr("Back"));
335 break;
336 case SetCenter:
337 RS_DIALOGFACTORY->updateMouseWidget(tr("Select the center of the tangent circle"),
338 tr("Back"));
339 break;
340 default:
341 RS_DIALOGFACTORY->updateMouseWidget();
342 break;
343 }
344 }
345
updateMouseCursor()346 void RS_ActionDrawCircleTan2_1P::updateMouseCursor()
347 {
348 switch (getStatus())
349 {
350 case SetCircle1:
351 case SetCircle2:
352 case SetCenter:
353 graphicView->setMouseCursor(RS2::SelectCursor);
354 break;
355 case SetPoint:
356 graphicView->setMouseCursor(RS2::CadCursor);
357 break;
358 }
359 }
360
361 // EOF
362